Question

a) 3 + x = 0

b) 12 – 7 + 4x = 25

c) 5x – 3x = 30​

Answer 1

Resposta:

A) x = -3

B) 4x = 25 - 12 + 7

4x = 20

X = 20 ÷ 4

X = 5

C) 5x - 3x = 30

2x = 30

X = 30 ÷ 2

X = 15